Development of Novel Acidizing Inhibitors for Carbon Steel Corrosion in 15% Boiling Hydrochloric Acid
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Development of Novel Acidizing Inhibitors
for Carbon Steel Corrosion in 15% Boiling Hydrochloric Acid
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| Creator |
Sathiyapriya, A.R.
Muralidharan, V.S. Subramanian, A. |
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| Subject |
Corrosion Science and Engineering
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| Description |
The inhibiUve action oj l-cinnamyLidine-3-thiocarbohydrazide (eTCH) and 1.1'-dicinnamyLidine-3-thiocarbohydrazide (DCTCH) against Lhe corrosion ojcarbon steel in 15% hydrochLoric
acid (HCL) was investigated u.sing noneLectrochemicaL and eLectrochemicaL techniques. Potentiodynamic polarization studies revealed that the compounds were mixed-type inhibitors
and exhibited more than 97% inhibition efficiency at
1.500 ppm oj inhibitor concentration. The effect of temperature on l/ lC corrosion behavior ojcarbon steel in 15% HCl with
1.500 ppm Ql'inhibitors was studied in the temperature range
Jrom 30°C to 11 a°c. The sLLrfac coverage (8) increased linearLy
witlt the Loqaritltm of the inhibitor concentrationjitting a Temkin adsorption isotherm. Thermodynamic parameters including
theJree energy ojadsorption, activation energy. enthalpy.
entropy. and heat ojudsoTption were also calcLLlated. The inhibitors reduced the hydrogen permeation current effectively
through the st eL sttrface. The protective}ilmJormed on the metaL surface by the adsorption ojorganic compounds was confirmed using Fourier trans/om1injrared (FTIR). ttltravioLet
(UV}-visibLe reflectancc. and scanning eLectron microscopy
(SEM) studirs.
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| Publisher |
NACE International
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| Date |
2008
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/57/1/022-2008.pdf
Sathiyapriya, A.R. and Muralidharan, V.S. and Subramanian, A. (2008) Development of Novel Acidizing Inhibitors for Carbon Steel Corrosion in 15% Boiling Hydrochloric Acid. Corrosion, 64 (6). pp. 541-552. |
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| Relation |
http://cecri.csircentral.net/57/
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